ICD-10 · PDGM grouping
E79 Disorders of purine and pyrimidine metabolism
All 7 codes in the E79 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
7
Can lead a claim
6
Cannot lead a claim
1
What CMS assigns to E79
6 of the 7 codes group to MMTA - Other; 1 is assigned no clinical group. 1 of the 7 counts toward the Demyelinating Diseases of the Central Nervous System comorbidity subgroup; 6 are assigned none. 6 of the 7 can lead a claim.
- Demyelinating Diseases of the Central Nervous System
Every code in E79
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| E79.0 | Hyperuricemia without signs of inflammatory arthritis and tophaceous diseaseCMS: Hyperuricemia w/o signs of inflam arthrit and tophaceous dis | Can lead a claim | A | None |
| E79.1 | Lesch-Nyhan syndrome | Can lead a claim | A | None |
| E79.2 | Myoadenylate deaminase deficiency | Can lead a claim | A | None |
| E79.8 Other disorders of purine and pyrimidine metabolism | ||||
| E79.81 | Aicardi-Goutieres syndrome | Can lead a claim | A | Demyelinating Diseases of the Central Nervous System |
| E79.82 | Hereditary xanthinuria | Can lead a claim | A | None |
| E79.89 | Other specified disorders of purine and pyrimidine metabolismCMS: Oth disrd of purine and pyrimidine metabolism | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| E79.9 | Disorder of purine and pyrimidine metabolism, unspecified | Can lead a claim | A | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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